C#中的换行符
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New line character in c#
提问by Ammar Alyousfi
I wrote this code to count the number of characters in a text file :
我写了这段代码来计算文本文件中的字符数：
sr.BaseStream.Position = 0;
sr.DiscardBufferedData();
int Ccount = 0;
while (sr.Peek() != -1)
{
sr.Read();
Ccount++;
}
but after applying this code to a file contains :
但是在将此代码应用于包含以下内容的文件后：
1
2
3
4
5
6
7
8
9
0
Ccount = 30 ???? why? I am using Windows Xp on virtual box on my Macbook the program used : Microsoft Visual Basic 2010.
帐号 = 30 ???? 为什么？我在我的 Macbook 上的虚拟机上使用 Windows Xp 使用的程序：Microsoft Visual Basic 2010。
采纳答案by Sina Iravanian
In Windows each new line consists of two characters \rand \n. You have 10 lines, each line have 1 visible characters and 2 new line characters which add up to 30 characters.
在 Windows 中，每个新行由两个字符\r和\n. 你有 10 行，每行有 1 个可见字符和 2 个新行字符，加起来最多 30 个字符。
If you have created your file in Mac or Unix/Linux you would have gotton different result (20 characters). Because Unix uses only \nand Mac uses only \rfor a new line.
如果您在 Mac 或 Unix/Linux 中创建了文件，则会得到不同的结果（20 个字符）。因为 Unix 只使用\n而 Mac 只\r用于换行。
You can use some editors (such as Notepad++) to show you new line characters, or even switch between different modes (DOS/Unix/Mac).
您可以使用一些编辑器（例如 Notepad++）来显示换行符，甚至可以在不同模式之间切换（DOS/Unix/Mac）。
回答by RichieHindle
You're reading one character at a time, and each line contains three characters:
您一次读取一个字符，每行包含三个字符：
- one digit
- one carriage return (
\r) - one newline (
\n)
- 一位数
- 一个回车 (
\r) - 一个换行符 (
\n)
(Windows uses \r\nas its newline sequence. The fact that you're running in a VM on a Mac doesn't affect that.)
（Windows\r\n用作其换行符序列。您在 Mac 上的 VM 中运行这一事实不会影响它。）
回答by Zdravko Danev
The new line is actually 2 separate characters: LF CR (line feed and carriage return). But you would know that if you put a breakpoint in your loop. Now for extra credit, how many bytes that is in unicode?
新行实际上是 2 个单独的字符：LF CR（换行和回车）。但是你会知道，如果你在循环中放置一个断点。现在为了额外的功劳，unicode 中有多少字节？
回答by weston
Windows typically uses \r\nfor new line, that is ASCII characters 0x13 and 0x10.
Windows 通常用于\r\n换行，即 ASCII 字符 0x13 和 0x10。
Suggest you prove this to yourself by doing this:
建议您通过这样做来向自己证明这一点：
Console.WriteLine("0x{0:x}", sr.Read());
回答by Hjalmar Z
There's an easier way to do this. Make the entire *.txt file to a string array and measure it:
有一种更简单的方法可以做到这一点。将整个 *.txt 文件制作成字符串数组并进行测量：
int count = 0;
string[] Text = File.ReadAllLines(/*Path to the file here*/);
for (int i = 0; i < Text.Count(); i++)
{
count += Text[i].Length;
}
